Temperature reading?

[ShadowCVL]

Chris, I don't understand how your car can show the outside temp that is on your phone when the two don't communicate with each other. Not that I don't believe you but this is very strange.

I just went out in my garage where it is 64 and my phone shows 45 temp outside (which it is). I only use PAAK so no key fob is present. Got in, started the car and it shows 64, the temp in the garage not the outdoor temp. I don't know what to tell you.

Okay, so I just went down to the garage on lunch to see. Only took my phone. Thermometer in the garage reads 52, its 31 out. and the car reads.... 52, so im just full of it I guess... lol, not the first time i have proven myself wrong.

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[scott_77]

There are many ambient temperature sensors inside the car. Some monitor the outside air temp coming in the car but most monitor the inside air temps for the HVAC system. Front Inside sensor 1, 2, 3, EATC inside car temp sensor, Footwell air discharge temp left and right sensors, dash air register discharge left and right sensors, outside air inlet temp sensor, etc. The BCM might call them exterior, outside or outdoor sensors but there is only one outside ambient air temp sensor and it has nothing to do with the BCM. It goes directly to the PCM.

I was just writing this as Sam posted the above. Anyway, there is only one outside ambient air temp sensor on all Ford's that I know of.

Do you know where these are located? The sensors that drive the HVAC. So many times in Chicagoland parked in the sun for work go to car when it’s like lower 60’s outside and car is blowing AC at me on Auto when set to 71/72. I thought it was being driven by the temp displayed from outside which often reads 20+ degrees higher than actual when in parking lots in Sun.

 

[markboris]

Do you know where these are located? The sensors that drive the HVAC. So many times in Chicagoland parked in the sun for work go to car when it’s like lower 60’s outside and car is blowing AC at me on Auto when set to 71/72. I thought it was being driven by the temp displayed from outside which often reads 20+ degrees higher than actual when in parking lots in Sun.

I don't know where they all are without looking at the repair manual but I will l get back to you with a DM.

 

[ChrisO]

One of the things I would love to see is what the car thinks the inside temperature is (and given there is dual controls maybe that should even be two temperatures).

There are other mysteries like what is the temperature hysteresis is. There is no way that it exactly maintains the temperature you set.

 

[Mach-Lee]

Do you know where these are located? The sensors that drive the HVAC. So many times in Chicagoland parked in the sun for work go to car when it’s like lower 60’s outside and car is blowing AC at me on Auto when set to 71/72. I thought it was being driven by the temp displayed from outside which often reads 20+ degrees higher than actual when in parking lots in Sun.

The interior temp/humidity sensor is a dot above the rearview mirror. The exterior temp sensor is in a hole above the front grille, near the front license plate. Those are the only two involved in deciding to turn on the A/C or not.

If the interior temp gets close to or exceeds the 72ºF setting and the outdoor temp is above 32ºF, then the A/C will turn on.

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